diff --git a/src/main/java/lambdas/UsePerson.java b/src/main/java/lambdas/UsePerson.java
index a231dea..220eb7f 100644
--- a/src/main/java/lambdas/UsePerson.java
+++ b/src/main/java/lambdas/UsePerson.java
@@ -24,7 +24,7 @@ public static void main(String[] args) {
 
         people = names.stream()
                 .map(Person::new) // uses the Person(String) ctr
-                // .map(Person::new) // uses the Person(Person) ctr
+                .map(Person::new) // uses the Person(Person) ctr
                 .collect(Collectors.toList());
         System.out.println(people);
 
@@ -49,7 +49,7 @@ public static void main(String[] args) {
         LinkedList<Person> linkedPersons = names.stream()
                 .map(Person::new)
                 .collect(
-                        () -> new LinkedList<Person>(),          // Supplier<LinkedList>
+                        () -> new LinkedList<>(),          // Supplier<LinkedList>
                         (list, person) -> list.add(person),      // BiConsumer<LinkedList, Person>
                         (list1, list2) -> list1.addAll(list2));  // BiConsumer<LinkedList, LinkedList>
         System.out.println(linkedPersons);
diff --git a/src/main/java/lazy/LazyStreams.java b/src/main/java/lazy/LazyStreams.java
index a2ee7a6..08ffec4 100644
--- a/src/main/java/lazy/LazyStreams.java
+++ b/src/main/java/lazy/LazyStreams.java
@@ -18,8 +18,15 @@ public static boolean modByThree(int n) {
     public static void main(String[] args) {
         // multiply numbers between 100 and 200 by 2, then find first n divisible by 3
         int firstEvenDoubleDivBy3 = IntStream.rangeClosed(100, 200)
+                .peek(n -> System.out.printf("Original: %d%n", n))
+                .map(n -> {
+                    System.out.println("Doubling " + n);
+                    return n;
+                })
                 .map(n -> n * 2)
+                .peek(n -> System.out.printf("Doubled: %d%n", n))
                 .filter(n -> n % 3 == 0)
+                .peek(n -> System.out.printf("Filtered: %d%n", n))
                 .findFirst().orElse(0);
         System.out.println(firstEvenDoubleDivBy3);
 
@@ -27,9 +34,7 @@ public static void main(String[] args) {
         // Demonstrate laziness using print statements
         firstEvenDoubleDivBy3 = IntStream.rangeClosed(100, 2_000_000)
                 .map(LazyStreams::multByTwo)
-                .sequential()
                 .filter(LazyStreams::modByThree)
-                .parallel()
                 .findFirst().orElse(0);
         System.out.printf("First even divisible by 3 is %d%n", firstEvenDoubleDivBy3);
     }